如何在WORDPRESS中将图像作为“SSL”提供

If you open this attached image you can see that my site pas lock is not working fine due to un secure images. can any body help me to resolve this issue ? My site is wordpress based and url of my site is https://designinsist.com/ Thanks in advance.

RESULT OF MY TEST INCASE IF YOU DON'T WANT TO PERFORM BY YOUR SELF

Fixed Result I fixed this issue just by uploading those images again with "https". That's what i did and my ssl is working fine.